Be sure to catch any fluid in a container and discard it safely according to local regulations.Drain the fluid from the transmission using a turkey baster or other suitable tool.Take off all mounting brackets attached onto your old transmission before setting aside in a safe spot away from children and pets for disposal later on if needed.Remove all remaining fluid from your transmission by sucking out with a turkey baster or siphoning out with an oil suction pump into an appropriate container dispose of properly according to local laws afterwards.Position an engine hoist underneath the middle of your 4L60E 4X4 transmission, attach chains securely around both sides, then raise up slowly until it is clear from its mounts and bellhousing area take care not to damage any other components during this step as you could cause further damage or costly repairs later down line.Loosen any vacuum lines or electrical connections connected to the transmission if they need to be removed as well use pliers for this step if necessary.Unbolt all of the bolts connecting the transmission to its supports and bellhousing, using a ratchet set and socket wrenches.Disconnect the negative battery cable from the battery terminal, using a wrench to loosen the nut securing it in place.Lift the vehicle with a jack and secure it on jack stands.Five-pinion front and rear planetaries, along with an additional 3/4 clutch allowing 7 clutches in the input housing and induction hardened input shaft assembly, were improved to withstand up to 380 ft By activating and deactivating the solenoids in a predetermined pattern by the PCM, 4 distinct gear ratios can be achieved.Īn updated 4L60-E, the 4L65-E (RPO M32), was phased in the 2001 model year when coupled behind the 6.0 Vortec. The 4L60E family of transmissions use 2 shift solenoids, initially called Shift Solenoid A & Shift Solenoid B, later changed to comply with OBDII regulations to 1-2 Shift Solenoid & 2-3 Shift solenoid. The 4L60E is rated to handle up to 360 ft Beginning in 1998 a new 300mm torque converter with improved higher-capacity internals, 300mm style input shaft, and 300mm style pump was also introduced on models coupled to a Gen III Small Block. In 1996, a bolt-on bell housing was phased in (along with a six-bolt tailhousing) for S-10 Trucks and S-10 Blazers and beginning in 1998 for all other applications. Other elements of the 4L60-E design were strengthened when the 4L65-E was introduced, but these were incorporated into the 4L60-E in 2002. The 4L60-E and 4L65-E were mostly built at Toledo Transmission (Hydramatic) plant in Toledo, Ohio.ĤL60E and 4L65E are differentiated mainly by the number of pinion gears in their planetary gearsets: The 4L60-E has four, while the heavy-duty 4L65-E has five. ![]() It is an evolution of the Turbo-Hydramatic 700R4, originally produced in 1982. Designed for longitudinal engine configurations, the series includes 4 forward gears and 1 reverse gear. The 4L60-E (and similar 4L65-E) is a series of automatic transmissions from General Motors starting in 1993. Every transmission is cold and hot tested before shipment. Heavy-duty recalibration kit installed to reduce slippage and increase durability.Ĭomplete road simulation using a dynamometer testing program called C.A.R.S. Modifications include updates to servos, the PR system, and valve body accumulators. Upgrades exceed OE requirements and eliminate the possibilities of front seal leaks, premature bushing wear, and vibration.Īll new, bushings installed in key locations to improve internal fluid flow control and fluid pressures.Ĭomplete system correction and recalibration kit installed to address several OE flaws. Remanufactured and improved torque converter tested for leaks, concentricity, and balance. Remanufactured valve body, with complete system correction and recalibration kit, improves pressure control and shift quality. Remanufactured pump, with new line bore bushings to eliminate leaks and provide superior flow and durability. High Energy 3-4 clutch pack, upgraded from 6 to 7 clutches to increase durability and torque capacity. High Energy 2-4 band installed to increase durability over the OE design. ![]() Sun Shells updated to the latest, stronger, and more durable design, eliminating common OE failures. Tru-Flat stator qualification and machining process. TCC control valve, TCC regulator valve, and Actuator Feed Valve updated to address common wear problems.ġ-2 Accumulator Pistons, upgraded to aluminum, replace the OE plastic pistons that can cause premature clutch failure. Oversize PR valves utilized to restore hydraulic integrity
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